Band saw



Jan. 20, 1931. as. TANNEWITZ- BAND SAW Filed Nov. 21,1929

INVENTO}; Car! 15'. 70/7/7410166 8g 7 7 A2NEYS 31min; 7

Application filed November. 1,"iszaj see no. 408,921; i

The mainobjects of this invention are; 1

First, to provide abandsaw in 'whichthe saw dustis effectively discharged without" the necessity for a separate blower or exhaust system. 7 i

, Second, to provldein a band saw" an ex I haust or dbris discharge means utilizing one of the band saw-wheelsas'a rotor.

, Third, to provide a structure having these. advantages whichis very simple and economical. t Objects pertaining to detailsand economies of my invention willdefinitely appear 1 from the description to follow. The inven-- '15 tion is defined in the claims. r r t r A structure embodyingthe features of my! invention is clearly illustrated in the'accompanying drawing, in which:

Fig. 1 is a side'elevationof form. 7

Fig; 2 is vertical section on line 2 2 of Fig. 3.

Fig. 3' isa fragmentary view partially in section on broken line .33 of Fig. 2. t Fig. 4'is a vertical section ofja modified form of debris conduit. j

Referring to the drawing,

1 represents the wheel. 7 shown at 4.

The band saw is conventionally ing 6 for the band saw, the'saw guide designated generally by the numeral" *7 being 7 located below the table.

constitutes the rotor of theblowen,

zle lO'which in the embodimentshown in Figs. 1 and 2 is built into the dbris conduit 11. This conduit has a nozzle 12' disposed protectedby this housing 9-but constitutes an effective blower rotor so that the band I Er A J EA i iMicixiGAN" In the embodiment illustrated conduit 11 is pr'ovidedwfith a segmental wallj v 13 seating upon; the surface of the cy'linder housing 9. The wall 13 has anopening 14:1" therein registering with an'opening 15 in the I i 7 I aband sawern- 20 bodying the features of my invention, the parts being shown mainly in conventional a fragmentary view =-mainly v v V: ments as may be desired.

ters Patent is: I 1. The combination .with a band sawin-- "5 1 Q eluding a'table and a band saw wheel dis- 1 1 frame and 2 the overhanging pedestal carry ing the housing 3 for the upper bandlsaw f The table 5 is'provided with a slot o ropena J r The blower housing is providedwith 11oz;

f wheelandv housing constituting a blower,'and a dbris' conduit independent of the housing concentrically within the nozzle 1Q thereby providing an ejector for the'dbris conduit.'. The band saw wheel '8 isnotsonly housed and v an ejector-for thedbris conduit. V i v e V 3. The combination in a band saw, of I housingfor one of'the band saw'wheels-co-- l. T operating therewith to provide-a blower,"an'd i w i saw is provided with an vintegral exhaust a debris conduit independentof the housing, 3

'1 means, thereby avoiding the necessity of providing separate blowers or connec'tingthe machine to an exhaust'system. '5 1', f t

the .dbris J housing. 9. r

j In Fig. 4 the debris conduit 16 has;a; dis--.; so charge nozzle 17, the blower nozzle 18 being disposed within the nozzle' l7 insteadfof sur-:

rounding it asshown inFig. 2.1 7 V v I I'am able to utilize the blast of-air created by the rota-{ta l P With this arrangement of parts tion of the band saw wheel in creatinga tem 'porary exhaust withthe result of a very great saving in power and installation costs.)

L I have not'attempted to illustrateand de- 1 scribe various other modifications and adap- 310 tations which I contemplate as it is believed f that this disclosure will enable those-skilled f in theart to embody or adapt my improve- :1 j

' Having 'thusfdescrloed my Invention what- I-iclaim'as new and desire to secure by i 9; T

posed below the table,.of a 'housingfor saidv and saw wheelconstituting ablowerfcasing Y .andprovidedwith a discharge nozzle, said. i yban'd saw1wheel constitutingablower rotor, o f 2 and, a ldbris conduit independent of the; v =;housingjdisposed below said table and provided with a nozzle associated] with said. The lower band. saw wheel 8 is provided with a'housing' 9, constituting a blower housing. The wheel8 g t t housing forone of the band saw wheels pro,-

2. The combination in a band saw, of a" vided with a dischargenozzle, suchband-saw provided with a discharge'nozzle operatively assoclated with said blower nozzleto provide 21.: Ad f 1,789,569 7 said blower and dbris oonduit having con- *centrica11y' disposed dischargenozzles cooperating to provide an ejector for saiddbris condult. 4; The combination in a band'saw, of a housing forone of the band saw wheels co- 1 operating therewith to provide a blower, and a dbris conduit for'the band saw independent of said housing, said blower having a diso v charge acting to create a current of air in said dbris conduit. i 1 7 In witness whereof I have hereunto set my hand.

CARL AN E I L v 

